package com.peng.springcloud.controller;

import com.peng.springcloud.entities.CommonResult;
import com.peng.springcloud.entities.Payment;
import com.peng.springcloud.lb.LoadBalancer;
import java.net.URI;
import java.util.List;
import javax.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

/**
 * @Author sp
 * @Description
 * @create 2021-02-09 15:04
 * @Modified By:
 */
@RestController
@Slf4j
public class OrderController {

  //public static final String PAYMENT_URL = "http://localhost:8001";

  public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

  @Resource
  private RestTemplate restTemplate;

  @Resource
  private LoadBalancer loadBalancer;
  @Resource
  private DiscoveryClient discoveryClient;

  @GetMapping("/consumer/payment/create")
  public CommonResult<Payment> create(Payment payment)
  {
    return restTemplate.postForObject(PAYMENT_URL +"/payment/create",payment,CommonResult.class);
  }

  @GetMapping("/consumer/payment/get/{id}")
  public CommonResult<Payment> getPayment(@PathVariable("id") Long id)
  {
    return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
  }

  @GetMapping("/consumer/payment/getForEntity/{id}")
  public CommonResult<Payment> getPayment2(@PathVariable("id") Long id)
  {
    ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);

    if(entity.getStatusCode().is2xxSuccessful()){
      return entity.getBody();
    }else{
      return new CommonResult<>(444,"操作失败");
    }
  }

  @GetMapping(value = "/consumer/payment/lb")
  public String getPaymentLB()
  {
    List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");

    if(instances == null || instances.size() <= 0)
    {
      return null;
    }

    ServiceInstance serviceInstance = loadBalancer.instances(instances);
    URI uri = serviceInstance.getUri();

    return restTemplate.getForObject(uri+"/payment/lb",String.class);

  }

//  // ====================> zipkin+sleuth
//  @GetMapping("/consumer/payment/zipkin")
//  public String paymentZipkin()
//  {
//    String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
//    return result;
//  }
}
